With war, every country is afraid. They're afraid of possibly being ambushed, becoming in dept, and many other reasons. So by remaining neutral they can sit back and not have to worry about being attacked by any country that's fighting. But that's not always the case now and days. Hope I answered your question correctly.
National Labor Relations Act
I think the answer would be D. because all of the above are true.
WAR is the answer i think
You should learn about the constitution because it establishes America’s government and basic rights for its citizens.